my confusion lies in the recent post by the same author.

https://steemit.com/warning/@cryptoctopus/never-ever-use-the-convert-to-steem-button-always-always-go-on-the-internal-market

I am asking because I did what this above post says not to do (convert steem to SP). I can't figure out how to purchase and trade these currencies relative to one another. If i shouldn't convert Steem to SP; what is a the difference. Can someone give a real life scenario. Maybe use current market prices.....

https://steemit.com/interest/@sigmajin/understanding-the-steem-economic-system-vests-sbd-steem-dilution-interest-and-all-those-crazy-things

*edit This link helped me